stealc | f1bff435d395515d6905b6e379eaefd63e38bb50c327b82c48e3d382039ae0db

Analysis

max time kernel
132s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
16-08-2023 07:26

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General

Target

book_532859.exe
Size

788.6MB
MD5

d6010f308bedbabe0f2d033de525d4ae
SHA1

4667dbb6f726cc4858f3492874b7d0d07ac8aebc
SHA256

a1cb435f433bbb16c1de7ce6e7de789d816244ca54680d36fbedfbfd4e4f5220
SHA512

44505cd94d49ae5271c7a882f87a66f8bef7fd3bcc910470ff93e3ce3c692165e9f15e8f5c6149fddfa43ef7cad1babff8c20f3fb2db1e848b17bc93799bb015
SSDEEP

24576:6I51wSSi3PrbK7h8TaeWru3GBLeNKp8zP+++++++iN0333T1Sizr:6I51Km6deWrucvyz+++++++iq333To8

Score

10^/10

stealc spyware stealer

Malware Config

Extracted

Family

stealc

http://65.108.211.9/a7b9969886761113.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2472	InstallUtil.exe
2472	InstallUtil.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2628 set thread context of 2472	2628	book_532859.exe	92

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
2628	book_532859.exe
2628	book_532859.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe
2472	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2628	book_532859.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 2528	2628	book_532859.exe	91
PID 2628 wrote to memory of 2528	2628	book_532859.exe	91
PID 2628 wrote to memory of 2528	2628	book_532859.exe	91
PID 2628 wrote to memory of 2472	2628	book_532859.exe	92
PID 2628 wrote to memory of 2472	2628	book_532859.exe	92
PID 2628 wrote to memory of 2472	2628	book_532859.exe	92
PID 2628 wrote to memory of 2472	2628	book_532859.exe	92
PID 2628 wrote to memory of 2472	2628	book_532859.exe	92
PID 2628 wrote to memory of 2472	2628	book_532859.exe	92
PID 2628 wrote to memory of 2472	2628	book_532859.exe	92
PID 2628 wrote to memory of 2472	2628	book_532859.exe	92

C:\Users\Admin\AppData\Local\Temp\book_532859.exe
"C:\Users\Admin\AppData\Local\Temp\book_532859.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  PID:2528
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:2472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/2472-194-0x0000000000400000-0x000000000062D000-memory.dmp

Filesize
2.2MB

Download
memory/2472-265-0x0000000000400000-0x000000000062D000-memory.dmp

Filesize
2.2MB

Download
memory/2472-200-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2472-199-0x0000000000400000-0x000000000062D000-memory.dmp

Filesize
2.2MB

Download
memory/2472-198-0x0000000000400000-0x000000000062D000-memory.dmp

Filesize
2.2MB

Download
memory/2628-167-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-175-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-143-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-142-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-145-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-147-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-149-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-151-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-153-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-155-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-157-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-159-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-161-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-163-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-165-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-133-0x00000000753C0000-0x0000000075B70000-memory.dmp

Filesize
7.7MB

Download
memory/2628-169-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-171-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-173-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-141-0x0000000004D80000-0x0000000004D90000-memory.dmp

Filesize
64KB

Download
memory/2628-177-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-179-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-181-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-183-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-185-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-187-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-189-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-191-0x0000000005290000-0x00000000052B3000-memory.dmp

Filesize
140KB

Download
memory/2628-192-0x0000000005250000-0x0000000005251000-memory.dmp

Filesize
4KB

Download
memory/2628-193-0x0000000005AE0000-0x0000000005B7C000-memory.dmp

Filesize
624KB

Download
memory/2628-140-0x00000000753C0000-0x0000000075B70000-memory.dmp

Filesize
7.7MB

Download
memory/2628-197-0x00000000753C0000-0x0000000075B70000-memory.dmp

Filesize
7.7MB

Download
memory/2628-139-0x0000000005270000-0x0000000005282000-memory.dmp

Filesize
72KB

Download
memory/2628-138-0x0000000004E50000-0x0000000004EE2000-memory.dmp

Filesize
584KB

Download
memory/2628-137-0x0000000005400000-0x00000000059A4000-memory.dmp

Filesize
5.6MB

Download
memory/2628-136-0x0000000004C60000-0x0000000004C61000-memory.dmp

Filesize
4KB

Download
memory/2628-135-0x0000000004D80000-0x0000000004D90000-memory.dmp

Filesize
64KB

Download
memory/2628-134-0x00000000001E0000-0x000000000038A000-memory.dmp

Filesize
1.7MB

Download